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<h1 id="秒杀解决方案"><a href="#秒杀解决方案" class="headerlink" title="秒杀解决方案"></a>秒杀解决方案</h1><h2 id="1-需求分析"><a href="#1-需求分析" class="headerlink" title="1.需求分析"></a>1.需求分析</h2><p>所谓“秒杀”，就是网络卖家发布一些超低价格的商品，所有买家在同一时间网上抢购的一种销售方式。通俗一点讲就是网络商家为促销等目的组织的网上限时抢购活动。由于商品价格低廉，往往一上架就被抢购一空，有时只用一秒钟。</p>
<p>秒杀商品通常有两种限制：库存限制、时间限制。</p>
<p>需求：</p>
<p>（1）商家提交秒杀商品申请，录入秒杀商品数据，主要包括：商品标题、原价、秒杀价、商品图片、介绍等信息</p>
<p>（2）运营商审核秒杀申请</p>
<p>（3）秒杀频道首页列出秒杀商品（进行中的）点击秒杀商品图片跳转到秒杀商品详细页。</p>
<p>（4）商品详细页显示秒杀商品信息，点击立即抢购实现秒杀下单，下单时扣减库存。当库存为0或不在活动期范围内时无法秒杀。</p>
<p>（5）秒杀下单成功，直接跳转到支付页面（微信扫码），支付成功，跳转到成功页，填写收货地址、电话、收件人等信息，完成订单。</p>
<p>（6）当用户秒杀下单5分钟内未支付，取消预订单，调用微信支付的关闭订单接口，恢复库存。</p>
<h2 id="2-秒杀实现思路"><a href="#2-秒杀实现思路" class="headerlink" title="2.秒杀实现思路"></a>2.秒杀实现思路</h2><p>秒杀技术实现核心思想是运用缓存减少数据库瞬间的访问压力！读取商品详细信息时运用缓存，当用户点击抢购时减少缓存中的库存数量，当库存数为0时或活动期结束时，同步到数据库。 产生的秒杀预订单也不会立刻写到数据库中，而是先写到缓存，当用户付款成功后再写入数据库。</p>
<h2 id="3-秒杀频道首页"><a href="#3-秒杀频道首页" class="headerlink" title="3.秒杀频道首页"></a>3.秒杀频道首页</h2><h3 id="3-1服务层"><a href="#3-1服务层" class="headerlink" title="3.1服务层"></a>3.1服务层</h3><p>返回当前正在参与秒杀的商品SeckillGoodsServiceImpl.java</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">&gt;</span></span> <span class="token function">findList</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token class-name">TbSeckillGoodsExample</span> example<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">TbSeckillGoodsExample</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">Criteria</span> criteria <span class="token operator">=</span> example<span class="token punctuation">.</span><span class="token function">createCriteria</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    criteria<span class="token punctuation">.</span><span class="token function">andStatusEqualTo</span><span class="token punctuation">(</span><span class="token string">"1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//审核通过</span>
    criteria<span class="token punctuation">.</span><span class="token function">andStockCountGreaterThan</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//剩余库存大于0</span>
    criteria<span class="token punctuation">.</span><span class="token function">andStartTimeLessThanOrEqualTo</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//开始时间小于等于当前时间</span>
    criteria<span class="token punctuation">.</span><span class="token function">andEndTimeGreaterThan</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//结束时间大于当前时间</span>
    <span class="token keyword">return</span> seckillGoodsMapper<span class="token punctuation">.</span><span class="token function">selectByExample</span><span class="token punctuation">(</span>example<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="3-2控制层"><a href="#3-2控制层" class="headerlink" title="3.2控制层"></a>3.2控制层</h3><p>SeckillGoodsController.java</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 当前秒杀的商品
	 * @return
	 */</span>
<span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/findList"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">&gt;</span></span> <span class="token function">findList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">return</span> seckillGoodsService<span class="token punctuation">.</span><span class="token function">findList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="3-3前端实现"><a href="#3-3前端实现" class="headerlink" title="3.3前端实现"></a>3.3前端实现</h3><p>创建seckillGoodsService.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//服务层</span>
app<span class="token punctuation">.</span><span class="token function">service</span><span class="token punctuation">(</span><span class="token string">'seckillGoodsService'</span><span class="token punctuation">,</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">$http</span><span class="token punctuation">)</span><span class="token punctuation">{</span>	    	
	<span class="token comment">//读取列表数据绑定到表单中</span>
	<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function-variable function">findList</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		<span class="token keyword">return</span> $http<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'seckillGoods/findList.do'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>		
	<span class="token punctuation">}</span>	
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>创建seckillGoodsController.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//控制层 </span>
app<span class="token punctuation">.</span><span class="token function">controller</span><span class="token punctuation">(</span><span class="token string">'seckillGoodsController'</span> <span class="token punctuation">,</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">$scope<span class="token punctuation">,</span>seckillGoodsService</span><span class="token punctuation">)</span><span class="token punctuation">{</span>	
    <span class="token comment">//读取列表数据绑定到表单中  </span>
    $scope<span class="token punctuation">.</span><span class="token function-variable function">findList</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        seckillGoodsService<span class="token punctuation">.</span><span class="token function">findList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
            <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
                $scope<span class="token punctuation">.</span>list<span class="token operator">=</span>response<span class="token punctuation">;</span>
            <span class="token punctuation">}</span>			
        <span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>       
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>	<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="3-4缓存处理"><a href="#3-4缓存处理" class="headerlink" title="3.4缓存处理"></a>3.4缓存处理</h3><pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Autowired</span>
<span class="token keyword">private</span> <span class="token class-name">RedisTemplate</span> redisTemplate<span class="token punctuation">;</span>

<span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">&gt;</span></span> <span class="token function">findList</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">//获取秒杀商品列表</span>
    <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">&gt;</span></span> seckillGoodsList <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillGoodsList<span class="token operator">==</span><span class="token keyword">null</span> <span class="token operator">||</span> seckillGoodsList<span class="token punctuation">.</span><span class="token function">size</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">==</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token class-name">TbSeckillGoodsExample</span> example<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">TbSeckillGoodsExample</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">Criteria</span> criteria <span class="token operator">=</span> example<span class="token punctuation">.</span><span class="token function">createCriteria</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        criteria<span class="token punctuation">.</span><span class="token function">andStatusEqualTo</span><span class="token punctuation">(</span><span class="token string">"1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//审核通过</span>
        criteria<span class="token punctuation">.</span><span class="token function">andStockCountGreaterThan</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//剩余库存大于0</span>
        criteria<span class="token punctuation">.</span><span class="token function">andStartTimeLessThanOrEqualTo</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//开始时间小于等于当前时间</span>
        criteria<span class="token punctuation">.</span><span class="token function">andEndTimeGreaterThan</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//结束时间大于当前时间</span>
        seckillGoodsList<span class="token operator">=</span> seckillGoodsMapper<span class="token punctuation">.</span><span class="token function">selectByExample</span><span class="token punctuation">(</span>example<span class="token punctuation">)</span><span class="token punctuation">;</span>		
        <span class="token comment">//将商品列表装入缓存</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"将秒杀商品列表装入缓存"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">for</span><span class="token punctuation">(</span><span class="token class-name">TbSeckillGoods</span> seckillGoods<span class="token operator">:</span>seckillGoodsList<span class="token punctuation">)</span><span class="token punctuation">{</span>
            redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> seckillGoods<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>			
    <span class="token punctuation">}</span>
    <span class="token keyword">return</span> seckillGoodsList<span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h2 id="4-秒杀详细页"><a href="#4-秒杀详细页" class="headerlink" title="4.秒杀详细页"></a>4.秒杀详细页</h2><h3 id="4-1显示详细页信息"><a href="#4-1显示详细页信息" class="headerlink" title="4.1显示详细页信息"></a>4.1显示详细页信息</h3><p>SeckillGoodsServiceImpl.java根据ID获取实体(从缓存中读取)</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">TbSeckillGoods</span> <span class="token function">findOneFromRedis</span><span class="token punctuation">(</span><span class="token class-name">Long</span> id<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span>  <span class="token punctuation">(</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">)</span>redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>id<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>
<p>SeckillGoodsController</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/findOneFromRedis"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token class-name">TbSeckillGoods</span> <span class="token function">findOneFromRedis</span><span class="token punctuation">(</span><span class="token class-name">Long</span> id<span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">return</span> seckillGoodsService<span class="token punctuation">.</span><span class="token function">findOneFromRedis</span><span class="token punctuation">(</span>id<span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>
<p>seckillGoodsService.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function-variable function">findOne</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">id</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">return</span> $http<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'seckillGoods/findOneFromRedis.do?id='</span><span class="token operator">+</span>id<span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>
<p>seckillGoodsController.js ，引入$location服务</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//查询实体 </span>
$scope<span class="token punctuation">.</span><span class="token function-variable function">findOne</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>	
    seckillGoodsService<span class="token punctuation">.</span><span class="token function">findOne</span><span class="token punctuation">(</span>$location<span class="token punctuation">.</span><span class="token function">search</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token string">'id'</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
        <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            $scope<span class="token punctuation">.</span>entity<span class="token operator">=</span> response<span class="token punctuation">;</span>					
        <span class="token punctuation">}</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>				
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="4-2秒杀倒计时效果"><a href="#4-2秒杀倒计时效果" class="headerlink" title="4.2秒杀倒计时效果"></a>4.2秒杀倒计时效果</h3><p> 在AngularJS中$interval服务用来处理间歇性处理一些事情</p>
<p>格式为：   $interval(执行的函数,间隔的毫秒数,运行次数);  </p>
<p>运行次数可以缺省，如果缺省则无限循环执行 </p>
<p>取消执行用cancel方法：  $interval.cancel(time);  </p>
<p>修改seckillGoodsController.js ，实现</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript">$scope<span class="token punctuation">.</span><span class="token function-variable function">findOne</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>	
    seckillGoodsService<span class="token punctuation">.</span><span class="token function">findOne</span><span class="token punctuation">(</span>$location<span class="token punctuation">.</span><span class="token function">search</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token string">'id'</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
        <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            $scope<span class="token punctuation">.</span>entity<span class="token operator">=</span> response<span class="token punctuation">;</span>
            allsecond <span class="token operator">=</span>Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span> <span class="token punctuation">(</span>  <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span>$scope<span class="token punctuation">.</span>entity<span class="token punctuation">.</span>endTime<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getTime</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">-</span> <span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getTime</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">/</span><span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">//总秒数</span>
            time<span class="token operator">=</span> <span class="token function">$interval</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> 
                <span class="token keyword">if</span><span class="token punctuation">(</span>allsecond<span class="token operator">&gt;</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">{</span> 
                    allsecond <span class="token operator">=</span>allsecond<span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">;</span>
                    $scope<span class="token punctuation">.</span>timeString<span class="token operator">=</span><span class="token function">convertTimeString</span><span class="token punctuation">(</span>allsecond<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//转换时间字符串</span>
                <span class="token punctuation">}</span><span class="token keyword">else</span><span class="token punctuation">{</span>
                    $interval<span class="token punctuation">.</span><span class="token function">cancel</span><span class="token punctuation">(</span>time<span class="token punctuation">)</span><span class="token punctuation">;</span> 		  
                    <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"秒杀服务已结束"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                <span class="token punctuation">}</span>
            <span class="token punctuation">}</span><span class="token punctuation">,</span><span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>			
        <span class="token punctuation">}</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>				
<span class="token punctuation">}</span>	

<span class="token comment">//转换秒为   天小时分钟秒格式  XXX天 10:22:33</span>
<span class="token function-variable function">convertTimeString</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">allsecond</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">var</span> days<span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span> allsecond<span class="token operator">/</span><span class="token punctuation">(</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">24</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//天数</span>
    <span class="token keyword">var</span> hours<span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span> <span class="token punctuation">(</span>allsecond<span class="token operator">-</span>days<span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">24</span><span class="token punctuation">)</span><span class="token operator">/</span><span class="token punctuation">(</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span><span class="token punctuation">)</span> <span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//小数数</span>
    <span class="token keyword">var</span> minutes<span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>  <span class="token punctuation">(</span>allsecond <span class="token operator">-</span>days<span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">24</span> <span class="token operator">-</span> hours<span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span><span class="token punctuation">)</span><span class="token operator">/</span><span class="token number">60</span>    <span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//分钟数</span>
    <span class="token keyword">var</span> seconds<span class="token operator">=</span> allsecond <span class="token operator">-</span>days<span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">24</span> <span class="token operator">-</span> hours<span class="token operator">*</span><span class="token number">60</span><span class="token operator">*</span><span class="token number">60</span> <span class="token operator">-</span>minutes<span class="token operator">*</span><span class="token number">60</span><span class="token punctuation">;</span> <span class="token comment">//秒数</span>
    <span class="token keyword">var</span> timeString<span class="token operator">=</span><span class="token string">""</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>days<span class="token operator">&gt;</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        timeString<span class="token operator">=</span>days<span class="token operator">+</span><span class="token string">"天 "</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
    <span class="token keyword">return</span> timeString<span class="token operator">+</span>hours<span class="token operator">+</span><span class="token string">":"</span><span class="token operator">+</span>minutes<span class="token operator">+</span><span class="token string">":"</span><span class="token operator">+</span>seconds<span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>修改页面seckill-item.html ，显示time的值</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>span</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>overtime<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span> 距离结束：{{timeString}}<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>span</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<h2 id="5-秒杀下单"><a href="#5-秒杀下单" class="headerlink" title="5.秒杀下单"></a>5.秒杀下单</h2><p>商品详细页点击立即抢购实现秒杀下单，下单时扣减库存。当库存为0或不在活动期范围内时无法秒杀。</p>
<h3 id="5-1服务层"><a href="#5-1服务层" class="headerlink" title="5.1服务层"></a>5.1服务层</h3><p>SeckillOrderServiceImpl.java实现提交订单方法</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Autowired</span>
<span class="token keyword">private</span> <span class="token class-name">RedisTemplate</span> redisTemplate<span class="token punctuation">;</span>

<span class="token annotation punctuation">@Autowired</span>
<span class="token keyword">private</span> <span class="token class-name">IdWorker</span> idWorker<span class="token punctuation">;</span>

<span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">submitOrder</span><span class="token punctuation">(</span><span class="token class-name">Long</span> seckillId<span class="token punctuation">,</span> <span class="token class-name">String</span> userId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">//从缓存中查询秒杀商品		</span>
    <span class="token class-name">TbSeckillGoods</span> seckillGoods <span class="token operator">=</span><span class="token punctuation">(</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>seckillId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillGoods<span class="token operator">==</span><span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span><span class="token string">"商品不存在"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getStockCount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">&lt;=</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span><span class="token string">"商品已抢购一空"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>	
    <span class="token comment">//扣减（redis）库存		</span>
    seckillGoods<span class="token punctuation">.</span><span class="token function">setStockCount</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getStockCount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>seckillId<span class="token punctuation">,</span> seckillGoods<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//放回缓存</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getStockCount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">==</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//如果已经被秒光</span>
        seckillGoodsMapper<span class="token punctuation">.</span><span class="token function">updateByPrimaryKey</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//同步到数据库	</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>seckillId<span class="token punctuation">)</span><span class="token punctuation">;</span>		
    <span class="token punctuation">}</span>
    <span class="token comment">//保存（redis）订单</span>
    <span class="token keyword">long</span> orderId <span class="token operator">=</span> idWorker<span class="token punctuation">.</span><span class="token function">nextId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">TbSeckillOrder</span> seckillOrder<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">TbSeckillOrder</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setId</span><span class="token punctuation">(</span>orderId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setCreateTime</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setMoney</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getCostPrice</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//秒杀价格</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setSeckillId</span><span class="token punctuation">(</span>seckillId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setSellerId</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getSellerId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setUserId</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//设置用户ID</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setStatus</span><span class="token punctuation">(</span><span class="token string">"0"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//状态</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillOrder"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>userId<span class="token punctuation">,</span> seckillOrder<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="5-2控制层"><a href="#5-2控制层" class="headerlink" title="5.2控制层"></a>5.2控制层</h3><p>SeckillOrderController.java</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/submitOrder"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token class-name">Result</span> <span class="token function">submitOrder</span><span class="token punctuation">(</span><span class="token class-name">Long</span> seckillId<span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">String</span> userId <span class="token operator">=</span> <span class="token class-name">SecurityContextHolder</span><span class="token punctuation">.</span><span class="token function">getContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getAuthentication</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span><span class="token string">"anonymousUser"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//如果未登录</span>
        <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Result</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token string">"用户未登录"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        seckillOrderService<span class="token punctuation">.</span><span class="token function">submitOrder</span><span class="token punctuation">(</span>seckillId<span class="token punctuation">,</span> userId<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Result</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token string">"提交成功"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span><span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">RuntimeException</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Result</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">,</span> e<span class="token punctuation">.</span><span class="token function">getMessage</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Result</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token string">"提交失败"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="5-3前端实现"><a href="#5-3前端实现" class="headerlink" title="5.3前端实现"></a>5.3前端实现</h3><p>seckillGoodsService.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//提交订单</span>
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function-variable function">submitOrder</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">seckillId</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">return</span> $http<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'seckillOrder/submitOrder.do?seckillId='</span><span class="token operator">+</span>seckillId<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>
<p>seckillGoodsController.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//提交订单</span>
$scope<span class="token punctuation">.</span><span class="token function-variable function">submitOrder</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    seckillGoodsService<span class="token punctuation">.</span><span class="token function">submitOrder</span><span class="token punctuation">(</span>$scope<span class="token punctuation">.</span>entity<span class="token punctuation">.</span>id<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
        <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token keyword">if</span><span class="token punctuation">(</span>response<span class="token punctuation">.</span>success<span class="token punctuation">)</span><span class="token punctuation">{</span>
                <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"下单成功，请在1分钟内完成支付"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                location<span class="token punctuation">.</span>href<span class="token operator">=</span><span class="token string">"pay.html"</span><span class="token punctuation">;</span>
            <span class="token punctuation">}</span><span class="token keyword">else</span><span class="token punctuation">{</span>
                <span class="token function">alert</span><span class="token punctuation">(</span>response<span class="token punctuation">.</span>message<span class="token punctuation">)</span><span class="token punctuation">;</span>
            <span class="token punctuation">}</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h2 id="6-秒杀支付"><a href="#6-秒杀支付" class="headerlink" title="6.秒杀支付"></a>6.秒杀支付</h2><p>用户成功下单后，跳转到支付页面。支付页显示微信支付二维码。用户完成支付后，保存订单到数据库。如果用户订单超时并未支付，应该释放订单，增加库存。</p>
<h3 id="6-1生成支付二维码"><a href="#6-1生成支付二维码" class="headerlink" title="6.1生成支付二维码"></a>6.1生成支付二维码</h3><p>SeckillOrderServiceImpl.java </p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 根据用户名查询秒杀订单
	 * @param userId
	 */</span>
<span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">TbSeckillOrder</span>  <span class="token function">searchOrderFromRedisByUserId</span><span class="token punctuation">(</span><span class="token class-name">String</span> userId<span class="token punctuation">)</span> <span class="token punctuation">{</span>		
    <span class="token keyword">return</span> <span class="token punctuation">(</span><span class="token class-name">TbSeckillOrder</span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillOrder"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>PayController.java </p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
 * 支付控制层
 * @author Administrator
 *
 */</span>
<span class="token annotation punctuation">@RestController</span>
<span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/pay"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">PayController</span> <span class="token punctuation">{</span>

    <span class="token annotation punctuation">@Reference</span>
    <span class="token keyword">private</span>  <span class="token class-name">WeixinPayService</span> weixinPayService<span class="token punctuation">;</span>

    <span class="token annotation punctuation">@Reference</span>
    <span class="token keyword">private</span> <span class="token class-name">SeckillOrderService</span> seckillOrderService<span class="token punctuation">;</span>	

    <span class="token comment">/**
	 * 生成二维码
	 * @return
	 */</span>
    <span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/createNative"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token class-name">Map</span> <span class="token function">createNative</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token comment">//获取当前用户		</span>
        <span class="token class-name">String</span> userId<span class="token operator">=</span><span class="token class-name">SecurityContextHolder</span><span class="token punctuation">.</span><span class="token function">getContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getAuthentication</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token comment">//到redis查询秒杀订单</span>
        <span class="token class-name">TbSeckillOrder</span> seckillOrder <span class="token operator">=</span> seckillOrderService<span class="token punctuation">.</span><span class="token function">searchOrderFromRedisByUserId</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token comment">//判断秒杀订单存在</span>
        <span class="token keyword">if</span><span class="token punctuation">(</span>seckillOrder<span class="token operator">!=</span><span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token keyword">long</span> fen<span class="token operator">=</span>  <span class="token punctuation">(</span><span class="token keyword">long</span><span class="token punctuation">)</span><span class="token punctuation">(</span>seckillOrder<span class="token punctuation">.</span><span class="token function">getMoney</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">doubleValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">*</span><span class="token number">100</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//金额（分）</span>
            <span class="token keyword">return</span> weixinPayService<span class="token punctuation">.</span><span class="token function">createNative</span><span class="token punctuation">(</span>seckillOrder<span class="token punctuation">.</span><span class="token function">getId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">+</span><span class="token string">""</span><span class="token punctuation">,</span><span class="token operator">+</span>fen<span class="token operator">+</span><span class="token string">""</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span><span class="token keyword">else</span><span class="token punctuation">{</span>
            <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">HashMap</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>		
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="6-2支付成功保存订单"><a href="#6-2支付成功保存订单" class="headerlink" title="6.2支付成功保存订单"></a>6.2支付成功保存订单</h3><p>SeckillOrderServiceImpl.java实现支付成功保存订单方法</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">saveOrderFromRedisToDb</span><span class="token punctuation">(</span><span class="token class-name">String</span> userId<span class="token punctuation">,</span> <span class="token class-name">Long</span> orderId<span class="token punctuation">,</span> <span class="token class-name">String</span> transactionId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"saveOrderFromRedisToDb:"</span><span class="token operator">+</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token comment">//根据用户ID查询日志</span>
    <span class="token class-name">TbSeckillOrder</span> seckillOrder <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">TbSeckillOrder</span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillOrder"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillOrder<span class="token operator">==</span><span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span><span class="token string">"订单不存在"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
    <span class="token comment">//如果与传递过来的订单号不符</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillOrder<span class="token punctuation">.</span><span class="token function">getId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">longValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">!=</span>orderId<span class="token punctuation">.</span><span class="token function">longValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span><span class="token string">"订单不相符"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>		
    seckillOrder<span class="token punctuation">.</span><span class="token function">setTransactionId</span><span class="token punctuation">(</span>transactionId<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//交易流水号</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setPayTime</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//支付时间</span>
    seckillOrder<span class="token punctuation">.</span><span class="token function">setStatus</span><span class="token punctuation">(</span><span class="token string">"1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//状态</span>
    seckillOrderMapper<span class="token punctuation">.</span><span class="token function">insert</span><span class="token punctuation">(</span>seckillOrder<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//保存到数据库</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillOrder"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//从redis中清除</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>PayController.java在支付成功后增加保存订单的方法</p>
<p>调用查询的方法，参见pinyougou-cart-web工程。</p>
<h3 id="6-3订单超时处理"><a href="#6-3订单超时处理" class="headerlink" title="6.3订单超时处理"></a>6.3订单超时处理</h3><p>（1）删除缓存中的订单</p>
<p>SeckillOrderServiceImpl.java从缓存中删除订单</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">deleteOrderFromRedis</span><span class="token punctuation">(</span><span class="token class-name">String</span> userId<span class="token punctuation">,</span> <span class="token class-name">Long</span> orderId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">//根据用户ID查询日志</span>
    <span class="token class-name">TbSeckillOrder</span> seckillOrder <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">TbSeckillOrder</span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillOrder"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>seckillOrder<span class="token operator">!=</span><span class="token keyword">null</span> <span class="token operator">&amp;&amp;</span>
       seckillOrder<span class="token punctuation">.</span><span class="token function">getId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">longValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">==</span> orderId<span class="token punctuation">.</span><span class="token function">longValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">)</span><span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillOrder"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>userId<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//删除缓存中的订单</span>
        <span class="token comment">//恢复库存</span>
        <span class="token comment">//1.从缓存中提取秒杀商品		</span>
        <span class="token class-name">TbSeckillGoods</span> seckillGoods<span class="token operator">=</span><span class="token punctuation">(</span><span class="token class-name">TbSeckillGoods</span><span class="token punctuation">)</span>redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>seckillOrder<span class="token punctuation">.</span><span class="token function">getSeckillId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span><span class="token punctuation">(</span>seckillGoods<span class="token operator">!=</span><span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            seckillGoods<span class="token punctuation">.</span><span class="token function">setStockCount</span><span class="token punctuation">(</span>seckillGoods<span class="token punctuation">.</span><span class="token function">getStockCount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">+</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>	
            redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"seckillGoods"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>seckillOrder<span class="token punctuation">.</span><span class="token function">getSeckillId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> seckillGoods<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//存入缓存</span>
        <span class="token punctuation">}</span>			 
    <span class="token punctuation">}</span>	
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（2）关闭微信订单</p>
<p>WeixinPayServiceImpl</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">Map</span> <span class="token function">closePay</span><span class="token punctuation">(</span><span class="token class-name">String</span> out_trade_no<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token class-name">Map</span> param<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">HashMap</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    param<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"appid"</span><span class="token punctuation">,</span> appid<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//公众账号ID</span>
    param<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"mch_id"</span><span class="token punctuation">,</span> partner<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//商户号</span>
    param<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"out_trade_no"</span><span class="token punctuation">,</span> out_trade_no<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//订单号</span>
    param<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"nonce_str"</span><span class="token punctuation">,</span> <span class="token class-name">WXPayUtil</span><span class="token punctuation">.</span><span class="token function">generateNonceStr</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//随机字符串</span>
    <span class="token class-name">String</span> url<span class="token operator">=</span><span class="token string">"https://api.mch.weixin.qq.com/pay/closeorder"</span><span class="token punctuation">;</span>
    <span class="token keyword">try</span> <span class="token punctuation">{</span>
        <span class="token class-name">String</span> xmlParam <span class="token operator">=</span> <span class="token class-name">WXPayUtil</span><span class="token punctuation">.</span><span class="token function">generateSignedXml</span><span class="token punctuation">(</span>param<span class="token punctuation">,</span> partnerkey<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">HttpClient</span> client<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">HttpClient</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span><span class="token punctuation">;</span>
        client<span class="token punctuation">.</span><span class="token function">setHttps</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        client<span class="token punctuation">.</span><span class="token function">setXmlParam</span><span class="token punctuation">(</span>xmlParam<span class="token punctuation">)</span><span class="token punctuation">;</span>
        client<span class="token punctuation">.</span><span class="token function">post</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">String</span> result <span class="token operator">=</span> client<span class="token punctuation">.</span><span class="token function">getContent</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">String</span><span class="token punctuation">,</span> <span class="token class-name">String</span><span class="token punctuation">&gt;</span></span> map <span class="token operator">=</span> <span class="token class-name">WXPayUtil</span><span class="token punctuation">.</span><span class="token function">xmlToMap</span><span class="token punctuation">(</span>result<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>map<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> map<span class="token punctuation">;</span>
    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
        e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token keyword">return</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（3）超时调用服务</p>
<p>PayController.java</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 查询支付状态
	 * @param out_trade_no
	 * @return
	 */</span>
<span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/queryPayStatus"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token class-name">Result</span> <span class="token function">queryPayStatus</span><span class="token punctuation">(</span><span class="token class-name">String</span> out_trade_no<span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token comment">//获取当前用户		</span>
    <span class="token class-name">String</span> userId<span class="token operator">=</span><span class="token class-name">SecurityContextHolder</span><span class="token punctuation">.</span><span class="token function">getContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getAuthentication</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">Result</span> result<span class="token operator">=</span><span class="token keyword">null</span><span class="token punctuation">;</span>		
    <span class="token keyword">int</span> x<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">;</span>		
    <span class="token keyword">while</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
            <span class="token keyword">try</span> <span class="token punctuation">{</span>
                <span class="token class-name">Thread</span><span class="token punctuation">.</span><span class="token function">sleep</span><span class="token punctuation">(</span><span class="token number">3000</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//间隔三秒</span>
            <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">InterruptedException</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
                e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
            <span class="token punctuation">}</span>	
        <span class="token comment">//不让循环无休止地运行定义变量，如果超过了这个值则退出循环，设置时间为1分钟</span>
        x<span class="token operator">++</span><span class="token punctuation">;</span>
        <span class="token keyword">if</span><span class="token punctuation">(</span>x<span class="token operator">&gt;</span><span class="token number">20</span><span class="token punctuation">)</span><span class="token punctuation">{</span>				
            result<span class="token operator">=</span><span class="token keyword">new</span>  <span class="token class-name">Result</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token string">"二维码超时"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>	
            <span class="token comment">//1.调用微信的关闭订单接口（学员实现）</span>
            <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">String</span><span class="token punctuation">,</span><span class="token class-name">String</span><span class="token punctuation">&gt;</span></span> payresult <span class="token operator">=</span> weixinPayService<span class="token punctuation">.</span><span class="token function">closePay</span><span class="token punctuation">(</span>out_trade_no<span class="token punctuation">)</span><span class="token punctuation">;</span>				
            <span class="token keyword">if</span><span class="token punctuation">(</span> <span class="token operator">!</span><span class="token string">"SUCCESS"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>payresult<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"result_code"</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//如果返回结果是正常关闭</span>
                <span class="token keyword">if</span><span class="token punctuation">(</span><span class="token string">"ORDERPAID"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>payresult<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"err_code"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
                    result<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">Result</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token string">"支付成功"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>	
                    seckillOrderService<span class="token punctuation">.</span><span class="token function">saveOrderFromRedisToDb</span><span class="token punctuation">(</span>userId<span class="token punctuation">,</span> <span class="token class-name">Long</span><span class="token punctuation">.</span><span class="token function">valueOf</span><span class="token punctuation">(</span>out_trade_no<span class="token punctuation">)</span><span class="token punctuation">,</span> map<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"transaction_id"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                <span class="token punctuation">}</span>					
            <span class="token punctuation">}</span>				
            <span class="token keyword">if</span><span class="token punctuation">(</span>result<span class="token punctuation">.</span><span class="token function">isSuccess</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">==</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
                <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"超时，取消订单"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                <span class="token comment">//2.调用删除</span>
                seckillOrderService<span class="token punctuation">.</span><span class="token function">deleteOrderFromRedis</span><span class="token punctuation">(</span>userId<span class="token punctuation">,</span> <span class="token class-name">Long</span><span class="token punctuation">.</span><span class="token function">valueOf</span><span class="token punctuation">(</span>out_trade_no<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>	
            <span class="token punctuation">}</span>				
            <span class="token keyword">break</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>			
    <span class="token punctuation">}</span>
    <span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h1 id="结语"><a href="#结语" class="headerlink" title="结语"></a>结语</h1><p>“征服之海，青铜三段！”<br>wegame上有些刺眼的几个大字，大叔面无表情，唇角有着一抹自嘲，紧握的手掌，因为大力，而导致略微尖锐的指甲深深的刺进了掌心之，带来一阵阵钻心的疼痛…<br>“韩金龙，征服之海，青铜三段！分数：38！”直播间的一位中年男子，看了一眼显示出来的信息，语气漠然的将之公布了出来…<br>中年男紫话刚刚脱口，便是不出意外的在直播间带起了一阵嘲讽的骚动。<br>“青铜？嘿嘿，果然不出我所料，这个“老师”段位真高！”<br>“哎，这废物真是把斗鱼的脸都给丢光了。”<br>“要不是他孝子多，这种废物，早就被驱赶出斗鱼，任其自生自灭了，哪还有机会待在这里混吃等死。”<br>“唉，昔年那名闻lol的金牌讲师，如今怎么落魄成这般模样了啊？”<br>“谁知道呢，或许做了什么亏心事，惹得神灵降怒了吧…”<br>周围传来的不屑嘲笑以及惋惜轻叹，落在那如木桩待在原地的少年耳，恍如一根根利刺狠狠的扎在心脏一般，让得大叔呼吸微微急促。</p>
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